Concrete reenforcement



March 6, 1934. wElCHOLD 1,949,924

CONCRETE REENFORCEMENT Filed July 1931 2 Sheets-Sheet l 2 Sheets-Sheet 2 VENTO C. WEICHOLD CONCRETE REENFORCEMENT Filed July 6, 1931 March 6, 1934.

Patented Mar. 6, 1934 UNITED STATES PATENT OFFFQE CONCRETE REENFORGEMENT Charles Weichold, Cincinnati, Ohio Application July 6, 1931, Serial No. 548,975

8 Claims. (01. 72--61) It is the object of my invention to provide a tube and arranged end to end, and a slip joint concrete reenrforcement in which the reenforcmember connecting said ends, and partly broken ing element is of cross-sectional hollow form away. whereby lightness and increased superficial area Fig. 8 is a side elevation of a portable reenrelative to weight of the reenforcing element is forced concrete beam containing my improved =39 obtained; further, to provide a hollow reenforcreenforcing members, partly broken away. ing element extending lengthwise in the con- Fig. 9 is a cross-section of the same, taken on crete; further, to provide the wall of the hollow the line 99 of Fig. 8. reenforcing element with holes through which Fig. 10 is a side elevational view-of a detail of 10 the concrete poured thereabout passes into the the same, partly broken away. hollow of the reeniorcing element for connect- Fig. 11 is a side elevation of another form of ing the concrete at the outside and at the inside my improved portable reenforced concrete beam of said reenforcing element; and, further, to shown in the form of a post, and partly broken provide crossing keys in said holes which are away; and,

15 imbedded in the concrete and serve as anchoring Fig. 12 is a cross-section of the same, taken 7 members. on the line 12-12 of Fig. 11.

It is the object of my invention, further, to My improved reenforcement structure comprovide cross-sectionally bowed reenforcing eleprises a strip which is cross-sectionally formed ments, the hollows of which are presented toward Wi h a median outwardly bowed portion the each other, and which have their margins concurve of which merges into inwardly bowed por- '3 nected for forming hollow reenforcing elements; tions 22 at the respective sides of the median out further, to provide tubular supplemental reen- Wardly bowed portion, the outer margins of said forcing elements in said hollow structures; furinwardly bowed portions forming flanges 23 at ther, to provide concrete filling in the hollows he respective Sides of the formed p- The 25 of said tubes and said hollow structures; and, cross-sectional curvature of the structure is in further, to provide a novel slip connection bethe form of an ogee curve at each side of the lontween the butt ends of reeniorcing elements it din l middl of h p, h ogee rves comprising oppositely bowed reenforcing strips, merging with each other along the middle of the the margins of which are connected. strip and flaring outwardly as flanges at both sides It is the object of my invention, further, to of the strip. provide novel portable reeniorcing concrete There are preferably two of such strips 24, 25, beams; and, further, to provide novel portable the hollows of which are presented toward each reenforced concrete beams including reeniorcthe and th a s o Which are connected for ing elements having tying connections between forming a av y 6 e di hwise of the 35 them. structure.

The invention will be further readily under- Th flan s at each side of the strips preferstood from the following description and claims, ably comprise a flange, the outer edge of which and from the drawings, in which latter: is provided with a reverse bend 27 for forming an Fig. 1 is a side elevation of one of my improved inwardly ext p 28 whereby a ve 9 40 reenforcing t t partly brok away is formed extending lengthwise along the inside Fig. 2 is a cross-section of the same, taken of the side margin of the strip, in which the side on th 11 2 2 of Fig, 1, edge 30 of the other of the strips is received and Fig. 3 is a side elevation of my improved reclamped for forming a rigid structure. Such a enforcing structure containing a reenforcing seamed margin preferably extends lengthwise of 45 tube, partly broken away the connected strips at each side of the same.

Fig. 4. is a cross-section of the same, taken The side walls of the structure are provided on the line 44 of Fig. 3. with holes 35. These holes are shown in the side Fig. 5 is a side elevation of a reenforced conwalls of each of the strips. They are preferably crete beam containing my improved reenforcarranged in pairs comparatively close together 50 ing structure, partly broken away. lengthwise of the strip, as shown by the pairs of Fig. 6 is a cross-section of the same, taken holes bracketed by the bracket 36 in Fig. 1. Such on the line 6-6 of Fig. 5, and containing the pairs of holes are preferably repeated at longer inner reenforcing tube and a cross key member. intervals throughout the length of the strip, as

Fig. '7 is a perspective View of a pair of my exemplified in Fig. 1. 55 reenforcing structures containing an internal For further reenforcement of the reenforcing strip, a tube 37 extends lengthwise throughout the hollow between the connected bowed strips, extending into the bows of said strips and between the bases of the ogee curves thereof, for

instance as exemplified in Fig. 4.

The inwardly curved portions of the ogee curvatures of the strips preferably contact the tube at various points around the circumference of the latter. The tube and the curved strips strengthen each other and afford mutual support for avoiding bending or distorting of the reenforcing structures. The tube is preferably clamped between the walls of the strips. The tube may be inserted lengthwise into the cavity between the mating strips, or the mating strips may be connected thereabout.

The holes 35 in the sides of the strips preferably extend into the crown portions of the strips beyond the circumference of the inner tube.

Cross keys 38 may be received through selective ones of the mating holes and extend outwardly beyond the respective sides of said reenforcing structure and form reenforcing positioning or anchoring pieces in the concrete.

The concrete is represented at 39. It may be of suitable composition and be poured while wet or plastic in a suitable form. The concrete is arranged to fiow through the holes 35 and fill the cavity 26 in the interior of the bowed strips, or, if combined with a tube 37, to fill the cavities 41, 42, between said tube and said strips. If desired, the tube may be provided with holes 43, 44, spaced apart in the length thereof, through which plastic concrete or composition may pass into the interior of the tube and into the cavities 42.

If desired, the holes 35 and the tube may be omitted, and, if further desired, the interiors of said tube and of the cavities 26, 41, 42, may be filled with concrete independent of the pouring of the concrete about the reenforcing structure.

For the purpose of connecting such reenforcing structures end to end similarly formed connecting strips 46, 47, may be provided, comprising outwardly crowned formations 51, inwardly curved formations 52, merging therewith, the bases of the latter forming flanges 53, and the curvatures being such that the strips are respectively of ogee curvature at each side of their median lines.

These strips have their hollowed portions presented toward each other about the respective ends of the abutting reenforcing structures, forming telescoping connection therewith. One of the flanges at each side of the connecting joint is provided with a reverse bend 5'7 terminating in a fiange 58 for forming'a groove 59 in which the side edge 60 of the other flange of the other bowed joint strip and the clamped edges 61 at one side of the respective abutting ends of the reenforcing structures are received, the other side of said abutting ends being similarly connected.

The reenforcing structures are employed either singly as exemplified in Figs. 5 and 6, or a number of the same are employed, as exemplified respectively in Figs. 8, 9 and 10, and in Figs. 11 and 12, for forming portable reenforced concrete beams.

Referring to Figs. 8, 9 and 10, eight of such reenforcing structures 62 are spaced apart and connected by connections 63 which are heavy wires looped about reenforcing structures by means of loops 54, upright stretches 65 extending between upright rows of the reenforcing structures and a cross stretch 66 extending between the rows of connected reenforcing structures at the bottoms of said rows. At the tops of the rows, the cross-key 138 extends through the holes of the top ones of the reenforcing structures, connecting said reenforcing structures and forming a cross stretch therebetween. The upper ends of the connections 63 are formed with eyes 68 received about the ends of the cross keys for suspending the connections and the reenforcing structures therein.

The concrete 6'7 is poured about such connected reenforcing structures while suitably supported in a form, the form into which the concrete is poured determining the outer shape of the portable reenforced concrete beam.

The form of the portable reenforced concrete beam shown in Figs. 11 and 12 is similar to the form of portable reenforced concrete beam shown in Figs. 8, 9 and 10, but employs a less number of reenforcing structures, four of these reenforcing structures being exemplified, the parts being designated by similar but primed reference numerals.

These portable reenforced concrete beams form ing the forms it is now necessary to construct on ill the building site in which to pour the concrete for the building.

The portable reenforced concrete beams mentioned may be preformed at a suitable place where this can be economically accomplished,"

and where the concrete may be suitably treated for enhancing its strength, and where the same forms can be used repeatedly for producing beams of desired sizes and strengths, and these preformed beams may then be transported to the site of the building being erected and be hoisted or moved into place in manner similar to the present day handling of steel beams. They may also be used as railway ties.

My improved reenforcing structure provides iii maximum strength with a minimum weight of reenforcing. My improved reenforcements may be made out of sheet metal rolled or otherwise shaped into the proper form and punched or otherwise manipulated for providing the holes.

The cross-sectional curvatures and the presenting of oppositely bowed strips toward each other and the connecting of the respective margins thereof provide for maximum strength with minimum weight of the reenforcing. sents rounded edges of the metal reenforcing to the concrete, and avoids the presenting of sharp edges of metal at its sides to the concrete, sharp edges in such relation having been found detrimental.

My improved device also provides means whereby the concrete is located on the exterior as well as in the interior of my improved reenforcements, and provides means whereby the reenforcements may be keyed lengthwise in the concrete.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. A concrete reenforcement comprising oppositely presented cross-sectionally bowed par- It also preallel strips having connected margins and forming a hollow between said strips, a reenforcing tube in said hollow to form a space between said connected strips and said tube, and hardened fillings in said tube and in said space.

2. A concrete reenforcement comprising oppositely presented cross-sectionally bowed parallel strips each of which at each side thereof is formed with an ogee curvature the inner margins of which merge with each other to form a bowed crown for the strip and the spaced margins of which form laterally outwardly extending flanges, the flanges of the strips presented toward each other for forming a hollow between said strips, and one of the flanges at each side of the structure provided with a reverse bend and an inwardly extending lip forming an inner groove in which the other flange is received.

3.A concrete reenforcement comprising oppositely presented cross-sectionally bowed parallel strips each of which at each side thereof is formed with an ogee curvature the inner margins of which merge with each other to form a bowed crown for the strip and the spaced margins of which form laterally outwardly extending flanges, the flanges of the respective strips presented toward each other for forming a hollow between said strips, one of the flanges at each side of the structure provided with a reverse bend and an inwardly extending lip to form an inner groove in which the other flange is received, and a tube in said hollow between said strips.

4. A concrete reenforcement comprising oppositely cross-sectionally bowed parallel strips, each of which at each side thereof is formed with an ogee curvature the inner margins of which merge with each other to form a bowed crown for the strip and the spaced margins of which form laterally outwardly extending flanges which are connected together to form a connected structure, the flanges of the strips presented toward each other for forming a hollow between said strips, and said connected structure provided with holes forming passageways for plastic concrete between the outside and the inside of said connected structure.

5 A concrete reenforcement comprising oppositely cross-sectionally bowed parallel strips, each of which at each side thereof is formed with an ogee curvature the inner margins of which merge with each other to form a bowed crown for the strip and the spaced margins of which form laterally outwardly extending flanges which are connected together to form a connected structure, the flanges of the strips presented toward each other for forming a hollow between said strips, said connect-ed structure provided with holes, and keys in said holes extending outwardly beyond said connected structure.

6. A concrete reenforcement comprising oppositely cross-sectionally bowed parallel strips, each of which at each side thereof is formed with an ogee curvature the inner margins of which merge with each other to form a bowed crown for the strip and the spaced margins of which form laterally outwardly extending flanges which are connected together to form a connected structure, the flanges of the strips presented toward each other for forming a hollow between said strios, and a reenforcing tube in the hollow of said structure, said connected structure and said tube provided with holes forming passageways for plastic concrete between the outside of said connected structure and the insides of said connected structure and of said tube.

7. A concrete reenforcement comprising oppositely cross-sectionally bowed parallel strips, each of which at each side thereof is formed with an ogee curvature the inner margins of which merge with each other to form a bowed crown for the strip and the spaced margins of which form laterally outwardly extending flanges which are con nected together to form a connected structure, the flanges or" the strips presented toward each other for forming a hollow between said strips, a reenforcing tube in the hollow of said structure, said connected structure and said tube provided with holes forming passageways for plastic concrete between the outside of said connected structure and the insides of said connected structure and of said tube, and keys in selective ones of said holes in said connected structure extending outwardly beyond said connected structure. 5:

8. A concrete reenforcement comprising oppositely presented telescoping oross-sectionally bowed reenforcement strips and joint strips, each of said strips at each side thereof formed with an ogee curvature the inner margins of which ture provided with a reverse bend and an inwardly extending lip forming an inner groove, the other flanges of said reenforcement strips received in said grooves in said reenforcement strips to form flanged edges, and said flanged edges and the other flanges of said joint strips received in said inner grooves of said joint strips.

CHARLES WEICHOLD. 

